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-   -   4.7 engine? (http://forums.pelicanparts.com/porsche-928-technical-forum/707838-4-7-engine.html)

XLR8928 09-23-2012 02:53 PM
4.7 engine?
 
Well today I decided to tear down my new engine project. I'm a bit puzzled though.. Upon removing the heads, I used my calipers on the bore, where I measured 3.81" (96.774mm). Isn't a 4.7 supposed to be 97mm? Any way, the stamping at the front of the block is: M-28/19 followed by 810770. This is a 4.7 isn't it?
thanks -Kerry

Danglerb 09-23-2012 10:51 PM
M28/19 is US 84/84 4.7L.

Any chance you measured the bore using a caliper with square jaws?

XLR8928 09-24-2012 07:08 AM
Quote:
Originally Posted by Danglerb (Post 6993979)
M28/19 is US 84/84 4.7L.

Any chance you measured the bore using a caliper with square jaws?
Yup!:rolleyes:

MPDano 09-24-2012 09:04 AM
Too many Beers, maybe?

http://blog.seattlepi.com/thebigblog...er_goggles.jpg

XLR8928 09-24-2012 11:29 AM
Quote:
Originally Posted by Danglerb (Post 6993979)
M28/19 is US 84/84 4.7L.

Any chance you measured the bore using a caliper with square jaws?
The caveat being I used the knife edge area of the calipers.
-K


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